Abstract: A method ascertains the viscosity of a sample using a rotary viscosimeter. A measuring body is arranged on a measuring shaft, and a second measuring part is arranged on the rotary viscosimeter. The distance between the measuring body and the second measuring part is reduced until a flow can pass between the measuring body and the second measuring part, thus defining a zero distance between the measuring body and the second measuring part. The distance between the measuring body and the second measuring part is increased from the zero distance such that a defined measuring gap is set. The second measuring part is removed, a sample is introduced into the second measuring part, and the second measuring part is repositioned. A viscosity measurement is carried out on the sample, and the viscosity of the sample is determined by an analysis unit.

Abstract: A method for determining the viscosity of materials uses a rotation viscosimeter having a measuring shaft connected through a coupling element to a drive and a measuring element on a shaft end applied to a sample. An angle measuring unit measures an angle deflection between drive and shaft. The measuring element is immersed in a measuring container containing the sample. The rotational speed of the shaft increases from a first measuring point at an initial speed in steps to further measuring points and the angle deflection between the drive and the shaft is determined in the measuring points. An estimation function is determined for the rotational speed and the angle deflection for the sample using measured values in the measuring points. An optimum rotational speed is determined based on the estimation function of a previously defined optimum angle deflection and the viscosity measurement of the sample is carried out.

Abstract: A method for determining the viscosity of materials uses a rotation viscosimeter having a measuring shaft connected through a coupling element to a drive and a measuring element on a shaft end applied to a sample. An angle measuring unit measures an angle deflection between drive and shaft. The measuring element is immersed in a measuring container containing the sample. The rotational speed of the shaft increases from a first measuring point at an initial speed in steps to further measuring points and the angle deflection between the drive and the shaft is determined in the measuring points. An estimation function is determined for the rotational speed and the angle deflection for the sample using measured values in the measuring points. An optimum rotational speed is determined based on the estimation function of a previously defined optimum angle deflection and the viscosity measurement of the sample is carried out.